light and Croton
Quick answer
If light is what's going on with your Croton, the most likely cause is: Codiaeum variegatum requires 2000-5000 lux of bright indirect light for optimal photosynthesis and variegation maintenance. Insufficient light (<1000 lux) causes etiolation, color reversion to green, and eventual decline. Sudden light reduction triggers photosynthetic shock and leaf abscission. Crotons are high-light tropicals evolved for canopy-edge conditions with 6+ hours daily sun exposure.
Start here:
- 1. Measure current light with phone lux meter app; target 2000-5000 lux indirect
- 2. Relocate to brightest window (south-facing ideal with sheer curtain for afternoon filter)
Why light happens to Croton
Codiaeum variegatum
Codiaeum variegatum requires 2000-5000 lux of bright indirect light for optimal photosynthesis and variegation maintenance. Insufficient light (<1000 lux) causes etiolation, color reversion to green, and eventual decline. Sudden light reduction triggers photosynthetic shock and leaf abscission. Crotons are high-light tropicals evolved for canopy-edge conditions with 6+ hours daily sun exposure.
How to correct light on Croton
- 1
Measure current light with phone lux meter app; target 2000-5000 lux indirect
- 2
Relocate to brightest window (south-facing ideal with sheer curtain for afternoon filter)
- 3
Supplement with full-spectrum LED grow light (6500K, 20-40W) positioned 12-18 inches above for 12-14 hours daily
- 4
Acclimate gradually when increasing light: start with 1 hour direct sun day 1, increase by 1 hour daily over 2 weeks
- 5
Avoid placing in low-light interior rooms; crotons cannot survive long-term below 500 lux
Keep light from repeating on this Croton
Place in south or east-facing window with filtered direct morning sun. Use light meter app to verify 2000+ lux. Rotate plant 90° weekly for even growth. When moving locations, acclimate gradually over 2 weeks to prevent light shock.